Drawing test tool for enclosure system
By designing a disc-shaped body and a pull-out test fixture made of stainless steel, combined with shaped accessories and magnet fixation, the problem of paint damage and cleaning caused by existing fixtures was solved, achieving efficient pull-out testing and reuse, and reducing costs.
Patent Information
- Application Number
- CN202423019350.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing enclosure system pull-out test fixtures damage the inner shell paint after testing, are difficult to clean, and cannot be reused, resulting in a large amount of repainting work and increased costs.
The pull-out test fixture, made of stainless steel with a disc-shaped body, is fixed with shaped accessories and magnets. It applies pressure through a hydraulic piston pump to conduct pull-out tests, reducing damage to the paint and facilitating cleaning and reuse.
It reduces damage to the inner shell paint, decreases the amount of touch-up painting work, increases the reusability of tooling, and reduces costs.
Smart Images
Figure CN223637357U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the field of offshore ship design and construction, and particularly relates to a containment system pull-out test tool. BACKGROUND
[0002] The Mark containment system is a patent of GTT Company in France, which is a non-self-supporting cargo containment system, and the insulation layer of the containment system needs to be adhered to the inner hull of the ship body by low-temperature resin. During the construction of the actual ship, the adhesion performance between the low-temperature resin, the inner hull paint and the inner hull of the ship body needs to be verified by a pull-out test before the installation of the insulation board. Once the adhesion performance is not up to standard, the entire system may fail.
[0003] The pull-out test needs to be operated by using a special tool, as shown in FIG. 1, and the type of the pull-out tool currently generally used is carbon steel. The front end is a circular plate 3 with a diameter of 50 mm and a thickness of 14 mm, and the rear end is an M10 screw rod 1 with a thread 2. The two are connected together by welding or threading. Figure 1 During the test, the low-temperature resin 5 is coated on the circular plate 3, the diameter of the resin 5 is the same as that of the pull-out tool, and the thickness is at least 10 mm. Then, the resin is adhered to the inner hull 4 of the ship body. During the hardening process of the resin, it is fixed by using a magnetic clamp. After the low-temperature resin 5 is solidified, it is installed in the pull-out equipment as shown in FIG. 2 by using the thread. The screw rod 1 of the pull-out tool is connected with the connecting piece 9 of the pull-out equipment by the thread 2. After the connection, the hydraulic piston pump 7 is pressed to apply pressure, and the pressure value can be read in the pressure gauge 8. The pull-out force is continuously applied until it is broken, and the pull-out strength at the time of breaking is recorded to confirm whether it meets the requirements. The specific requirements are shown in Table 1. Figure 2
[0004] Although this method can achieve the purpose of the pull-out test, it has the following disadvantages:
[0005] 1. According to the specification requirements, there are more than 100 test points for each tank of a 170,000 cubic meter LNG ship. The inner hull paint will be damaged after the test. The area of the front end circular plate 3 of the pull-out tool currently used is large, and a large amount of paint repair work will be generated after the test.
[0006] 2. The pull-out tool cannot be well reused after the test, mainly because it is difficult to keep clean after the adhered low-temperature resin is disposed of, and it is easy to rust. SUMMARY
[0007] To solve the above problems, the present application provides a containment system pull-out test tool, which adopts the technical scheme of:
[0008] A kind of enclosure system pull-out test tool, there is disc type main body, disc type main body top is fixed with transition piece, transition piece gradually becomes larger from top to bottom, it is trumpet-shaped, transition piece top is fixed with round cake type handle, resin is laid on the surface of disc type main body, at different open time and temperature, the disc type main body with resin is adhered to the inner hull of test point ship, shaping accessory is placed on the disc type main body, when resin solidifies, shaping accessory is removed.
[0009] Test connector is installed on the top of disc type main body, is connected with tension equipment by test connector, test connector has box type main body, one side of box type main body is open, the opening of box type main body is forward, and its bottom is provided with strip-shaped channel, transition piece top is clamped into strip-shaped channel, and round cake type handle is located inside frame type main body.
[0010] Cylindrical connecting groove is arranged on the top of test connector, connecting groove has internal thread, tension equipment is provided with hydraulic piston pump, hydraulic piston pump is connected with rubber tube, external thread is arranged on the end of rubber tube, pressure gauge is fixed on rubber tube, and tension equipment is connected with connecting groove by thread.
[0011] Pressure is applied to hydraulic piston pump until the pull-out tool is broken with the inner hull of ship or resin.
[0012] The pressure value in pressure gauge is read and recorded, and whether the tensile strength meets the requirements is confirmed.
[0013] The enclosure system pull-out test tool further has door type frame main body, the center of door type frame main body top is provided with clamping groove, transition piece top is clamped into clamping groove, and magnet is arranged on the bottom of door type frame main body and is adsorbed on the inner hull of ship.
[0014] The enclosure system pull-out test tool further has that the size of resin is same with the size of disc type main body, and the thickness is greater than 10 mm.
[0015] The enclosure system pull-out test tool further has that after 48 hours, shaping accessory is removed, and resin is completely solidified.
[0016] The enclosure system pull-out test tool further has that disc type main body, transition piece, round cake type handle, shaping accessory and test connector are made of stainless steel.
[0017] The enclosure system pull-out test tool further has that the diameter of disc type main body is 10-20 mm.
[0018] The enclosure system pull-out test tool further has that magnet is bonded on the bottom of door type frame.
[0019] The enclosure system pull-out test tool has the following beneficial effects:
[0020] 1The bottom surface area of the application is only one fifth of the current tooling, and the tensile test will damage the inner shell paint, and the use of the drawing tool reduces a large amount of paint work and shortens the construction period.
[0021] 2The application is equipped with corresponding shaping accessories and tensile equipment connectors, and the installation method is relatively simple, the connection method is very firm, and the fixing effect can be well achieved.
[0022] 3The material of the application is stainless steel, and the resin adhered to the surface after the test can be easily removed, reused, and the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 The existing tensile test adopts tooling;
[0024] Figure 2 The existing tensile equipment structure diagram;
[0025] Figure 3 It is a drawing tool structure diagram of the application;
[0026] Figure 4 It is a shaping accessory use diagram;
[0027] Figure 5 It is a front view diagram of the test connector;
[0028] Figure 6 It is Figure 5 A-A cross-sectional view in the application;
[0029] 1-disk type main body, 2-cake type handle, 3-transition piece, 4-ship inner hull, 5-resin, 7-hydraulic piston pump, 8-pressure gauge, 11-shaping accessory, 15-magnet, 17-test connector, 18-internal thread. DETAILED DESCRIPTION
[0030] As Figure 3 shown, a kind of enclosure system drawing test tooling, has drawing tooling, drawing tooling has disk type main body, disk type main body top is fixed with transition piece, transition piece gradually becomes large from top to bottom, present horn shape, transition piece top is fixed with cake type handle, disk type main body surface is laid with resin, at different open time and temperature, the disk type main body with resin is adhered to the ship inner hull of test point, shaping accessory is placed on disk type main body, when resin solidifies, shaping accessory is removed. The diameter of disk type main body is 10~20mm, the diameter of cake type handle is slightly smaller than the diameter of disk type main body, and it is very small.
[0031] A test connecting piece is installed on the top of the disc-shaped body, connected with the tension equipment through the test connecting piece, the test connecting piece is provided with a box-shaped body, one side of the box-shaped body is open, the open side of the box-shaped body faces forward, a strip-shaped channel is formed in the bottom of the box-shaped body, the top of the transition piece is clamped into the strip-shaped channel, and the disc-shaped handle is located in the frame-shaped body.
[0032] A cylindrical connecting groove is arranged on the top of the test connecting piece, the connecting groove is provided with an internal thread, the tension equipment is provided with a hydraulic piston pump, the hydraulic piston pump is connected with a rubber pipe, the end of the rubber pipe is provided with an external thread, a pressure gauge is fixed on the rubber pipe, and the tension equipment is threadedly connected with the connecting groove.
[0033] Pressure is applied to the hydraulic piston pump until the drawing tool and the inner hull or the resin are broken.
[0034] The pressure value in the pressure gauge is read and recorded, and whether the tensile strength meets the requirements is confirmed.
[0035] During the test, the drawing tool needs to be temporarily fixed by using the shaping accessory 11, and the two are used in cooperation as shown in Figure 4 The shaping accessory is provided with a door-shaped frame body, a clamping groove is formed in the center of the top of the door-shaped frame body, the top of the transition piece is clamped into the clamping groove, and the bottom of the door-shaped frame body is provided with a magnet which is adsorbed on the inner hull of the ship body.
[0036] In order to verify the adhesion performance between the low-temperature resin 5 of the cargo hold of the LNG ship and the inner hull 4 of the ship body, the resin tensile test needs to be carried out by using the above-mentioned drawing tool 10 and the shaping accessory 11 before the installation of the insulation layer of the actual ship, and the specific test steps are as follows:
[0037] (1) The resin used by the adhesion insulation board is coated on the drawing tool 10 in a diameter same as that of the drawing tool 10 and a thickness of at least 10 mm, the drawing tool 10 with the resin 5 is adhered to the coated test point of the inner hull 4 of the ship body under different open times and temperatures, and before the curing of the resin 5, the shaping accessory 11 needs to be installed on the drawing tool 10, the shaping accessory 11 can be fixed on the inner hull 4 of the ship body through the bottom magnet 15, and the two parts are connected together through the slot 13, so as to fix the drawing tool 10.
[0038] After 48 hours, the low-temperature resin 5 is cured, the shaping accessory 11 is removed, and the tensile test is carried out.
[0039] (2) As shown in Figure 6As shown, the drawing tool 10 is connected with the hydraulic piston pump 7 through the test connecting piece 17. The test connecting piece 17 is designed in the form of a clamp matching the shape of the drawing tool 10, made of stainless steel, and the opening size is determined according to the top and middle diameters of the drawing tool 10, which can be completely matched with the top and middle diameters of the drawing tool 10. The front empty and rear solid design not only can be installed with the drawing tool 10 in a sliding manner, but also can prevent the test connecting piece 17 from falling off during the transverse bulkhead tension test, affecting the test process and results. The upper part of the test connecting piece is provided with a slot with a thread 18, and the test connecting piece can be connected with the tension equipment through the thread 18.
[0040] (3) After the connection is completed, the test is formally started, the hydraulic piston pump 7 is applied with pressure, and the tension applied should meet the standard shown in Table 1 until the drawing tool 10 is broken with the inner hull 4 or the resin 5.
[0041] (4) The pressure value in the pressure gauge 8 is read and recorded, and it is confirmed whether the tension strength meets the requirements. Although the surface area of the drawing tool 10 is reduced, the corresponding tension requirement is also reduced, but the value read in the pressure gauge 8 is the pressure value, so the tension test standard does not change, which is still the value in Table 1.
[0042] (5) The resin 5 on the drawing tool 10 is removed, and after cleaning, it can be repeatedly used.
[0043] The specific application examples are as follows:
[0044] (1) Four samples are respectively prepared under the conditions of temperature 15℃, humidity 7%, open time 90 minutes, 110 minutes, and 120 minutes. The tension test sample preparation process is: a resin 5 with a diameter of 15mm and a thickness of 12mm is coated on a drawing tool 10 with a diameter of 15mm.
[0045] (2) After the open time ends, the sample is adhered to the coated test point of the inner hull 4 of the ship body, and before the resin 5 is solidified, a shaping accessory 11 needs to be installed on the sample to avoid displacement.
[0046] (3) After 48 hours, the resin 5 is completely solidified, and the shaping accessory is removed. The sample is connected with the hydraulic piston pump 7 using the test connecting piece 17, and the tension test is formally started. The hydraulic piston pump 7 is applied with pressure until the sample is broken with the inner hull 4 or the resin 5.
[0047] (4) The pressure value in the pressure gauge 8 is read after each test, and the results are as follows:
[0048] The results meet the requirements in Table 1, the test is successful, and the adhesion performance between the low-temperature resin, the inner hull paint, and the inner hull of the ship body meets the standard.
Claims
1. A containment system pull test fixture, characterized by, The drawing tool has a disc-shaped body (1), a transition piece (3) is fixed above the disc-shaped body, the transition piece gradually increases from top to bottom and is trumpet-shaped, a round cake-shaped handle (2) is fixed at the top of the transition piece, a resin (5) is applied on the surface of the disc-shaped body, the disc-shaped body with the resin is adhered to the inner hull of the test point, a shaping accessory (11) is placed on the disc-shaped body, and the shaping accessory is removed after the resin is solidified; A test connecting piece (17) is installed at the top of the disc-shaped body, the test connecting piece is connected with a tension device, the test connecting piece has a box-shaped body, one side of the box-shaped body is open, the open side of the box-shaped body faces forward, a strip-shaped channel is formed at the bottom of the box-shaped body, the top of the transition piece is clamped into the strip-shaped channel, and the round cake-shaped handle is located inside the frame-shaped body; A cylindrical connecting groove is arranged at the top of the test connecting piece, the connecting groove has an internal thread (18), the tension device has a hydraulic piston pump (7), the hydraulic piston pump is connected with a rubber pipe, an external thread is arranged at the end of the rubber pipe, a pressure gauge (8) is fixed on the rubber pipe, and the tension device is threadedly connected with the connecting groove.
2. A cladding system pull test fixture according to claim 1, wherein, The shaping accessory has a door-shaped frame body, a clamping groove is formed at the top center of the door-shaped frame body, the top of the transition piece is clamped into the clamping groove, and a magnet (15) is arranged at the bottom of the door-shaped frame body.
3. The system of claim 1, wherein, The size of the resin is the same as that of the disc-shaped body, and the thickness of the resin is greater than 10 mm.
4. The system of claim 1, wherein, After 48 hours, the shaping accessory is removed, and the resin is completely solidified.
5. The system of claim 1, wherein, The disc-shaped body, the transition piece, the round cake-shaped handle, the shaping accessory and the test connecting piece are all made of stainless steel.
6. The system of claim 1, wherein, The diameter of the disc-shaped body is 10-20 mm.
7. The system of claim 2, wherein, The magnet is adhered to the bottom of the door-shaped frame.